ASRock DeskMini A300 Mini-STX
View on Instagram
If you're looking for small form factor then ASRock probably have you covered, the new DeskMini A300 is tiny at only 155 x 155 x 80 mm (1.92L), this barebones machine will give you the ability to throw in an AMD AM4 Socket CPU, 2 x DDR4 SO-DIMM and video outputs of HDMI(4K @60Hz), DisplayPort and D-Sub.
It would make for a great work machine or a home theatre PC without any problems.
Tags: ASRock, Mini, PC. STX